Use the Spiral commands to add fixed, free, or floating spirals to the alignment geometry.
Topics in this section
- Spiral Definitions
Various transition curves are used in civil engineering to gradually introduce curvature and superelevation between both tangents and circular curves as well as between two circular curves with different curvature.
- Adding Fixed Spirals
Use the Alignment Layout Tools to add a fixed spiral to the end of an existing entity.
- Adding Free Spirals
Use the free spiral commands to create spiral solutions as a transition between two curves with different radii.